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US4578192A - Filter cloth for a disk filter - Google Patents

Filter cloth for a disk filter Download PDF

Info

Publication number
US4578192A
US4578192A US06/639,404 US63940484A US4578192A US 4578192 A US4578192 A US 4578192A US 63940484 A US63940484 A US 63940484A US 4578192 A US4578192 A US 4578192A
Authority
US
United States
Prior art keywords
filter
filter cloth
shaped
clamps
disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/639,404
Other languages
English (en)
Inventor
Hans-Rudolf Muller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zuricher Beuteltuchfabrik AG
Original Assignee
Zuricher Beuteltuchfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zuricher Beuteltuchfabrik AG filed Critical Zuricher Beuteltuchfabrik AG
Assigned to ZURICHER BEUTELTUCHFABRIK AG reassignment ZURICHER BEUTELTUCHFABRIK AG ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MULLER, HANS-RUDOLF
Application granted granted Critical
Publication of US4578192A publication Critical patent/US4578192A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B01D33/23—Construction of discs or component sectors thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/06—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0654—Support layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0659—The layers being joined by needling

Definitions

  • the invention relates to a filter cloth for a disk filter with in particular sector-shaped filter cells having reinforcements.
  • Another disadvantage of the excessively bulging filter cloth is that the air cannot escape fast enough and consequently the filter cloth passes through the scraper in the inflated state and grazes along the same.
  • such a disk filter has two perforated plates or strainers, on to which the filter cloth is fixed by means of clamping strips.
  • the latter can have a radial and/or arcuate and/or star-like and/or plate-shaped configuration.
  • clamping strips are also required for fixing the filter cloth in order to prevent excessive bulging of the latter.
  • a reequipping of existing filter systems causes problems, because perforated plates and clamping strips must be correspondingly adapted, so that the undesired excessive bulging is prevented.
  • the problem of the invention is therefore to provide a filter cloth, in connection with which it is possible to prevent excessive bulging in simple manner during the compressed air action for removing the filter cake.
  • the reinforcements comprise U-shaped clips or clamps made from metal or plastic or some other rigid material, whose leg or end spacing is adapted to the disk filter segment thickness.
  • the clips can have a flat or a circular profile.
  • the legs of these clips are, for example, fixed in a seam formed by the joint of two filter bag or pouch halves, or in a hollow seam obtained by sewing a strip-like piece of fabric on to the filter cloth fabric, or in loops provided on the filter cloth fabric.
  • a seam formed by the joint of two filter bag or pouch halves or in a hollow seam obtained by sewing a strip-like piece of fabric on to the filter cloth fabric, or in loops provided on the filter cloth fabric.
  • the ends of the clip legs can be fixed by straps, which leads to a paticularly reliable connection between the fabric and the clips. It is also possible to fix the ends of the clip legs by a further clip or buckle fitted to the outside of the filter cloth fabric.
  • the reinforcements can be directed in a radial or an arcuate manner. All that is important is that the reinforcements are guided in such a way that excessive bulging of the filter cloth is prevented during the compressed air action.
  • the reinforcements can also be firmly incorporated into the fabric, i.e. the reinforcements in the form of flat or circular profiles can be firmly or fixedly sewn into the hollow seams of the fabric.
  • a filter cell it is finally also possible for a filter cell to have several reinforcements, which is particularly the case if said cell has a relatively large surface area, so that large bulges are to be feared.
  • the material for the reinforcements or clips are chosen as a function of the intended use of the disk filter. If the disk filter is to be used for treating particularly aggressive materials, then the reinforcements are appropriately made from top-quality steel or a suitable plastic.
  • the filter cloth according to the invention can also be used together with a perforated plate or strainer, on whose surface it is placed. This is particularly the case if the disk filter has a relatively large diameter. However, such a perforated plate is not necessary for smaller diameters.
  • the reinforcements should also be concave corresponding to the perforated plate, so that the filter cloth is adapted to the concave surface of the perforated plate.
  • the invention makes it possible to obtain a filter cloth for a disk filter, in which the reinforcements are directly integrated into the filter cloth fabric, so that there is no need to provide special measures consisting of the cooperation of the clamping strips and a perforated plate, merely for securing the filter cloth.
  • FIGS. 1 to 5 each of which shows a sector-shaped filter cell of the filter cloth.
  • FIG. 1 shows a sector-shaped filter cell 1, which comprises a filter cloth 2 forming two filter bag halves.
  • a clip 7 made from metal or plastic or some other rigid material having a flat profile.
  • This clip 7 has a U-shaped construction and has legs 8, 9, each of which is fixed into one of the hollow seams 5, 6.
  • the distance d between legs 8, 9 of clip 7 is precisely adapted to the disk filter segment thickness d.
  • Straps 10 and 11 are applied to the filter segment made from plastic, metal or some other appropriate material, so that the leg ends of the clip acquire an additional hold. It is also possible to provide an additional clip or buckle on the outside of the fabric, to ensure that the ends of legs 8, 9 of clip 7 are particularly well fixed.
  • FIG. 2 shows another embodiment of the invention, in which leg 3 of clip 7 is secured by loops 12, which are sewn on to the surface of filter cloth 2. It is obviously also possible to provide these loops 12 on the inside of filter cloth 2.
  • FIG. 3 shows a filter cell with a particularly large filter segment surface.
  • said filter segment surface is subdivided by several hollow seams 5, 6, 15, 16 and 25, 26.
  • hollow seams it is obviously also possible to use loops in accordance with the embodiment of FIG. 2.
  • FIG. 4 shows an embodiment of the invention in which the hollow seams 35, 36 and 45, 46 for receiving the reinforcements are arcuate and not radial as in the other embodiments. It would also be possible to provide such arcuate reinforcements in addition to radial reinforcements.
  • the U-shaped legs 18a, 18b of the U-shaped fork 17a are introduced into the hollow seams 35, 36 from one side, whilst the U-shaped legs 19a, 19b of U-shaped fork 17b are inserted from the other side.
  • the free ends of the two U-shaped legs 19a 19b pass at the points indicated by arrows into the frontal openings of the U-shaped legs 18a, 18b, which are constructed as hollow profiles.
  • no additional holding support is required in this embodiment, because the two clips reciprocally secure one another.
  • FIG. 5 shows another embodiment of the invention, in which the hollow seams 55, 65 run in V-shaped manner from a common point on the circumference of filter cell 1 towards the centre of the disk.
  • This embodiment is particularly advantageous for very wide filter cells.
  • a particularly large surface of the filter cell is so subdivided by the embodiment of FIG. 5 that no large bulge can form.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Treatment Of Fiber Materials (AREA)
US06/639,404 1983-08-11 1984-08-10 Filter cloth for a disk filter Expired - Fee Related US4578192A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3329117 1983-08-11
DE3329117A DE3329117A1 (de) 1983-08-11 1983-08-11 Filtertuch fuer scheibenfilter

Publications (1)

Publication Number Publication Date
US4578192A true US4578192A (en) 1986-03-25

Family

ID=6206371

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/639,404 Expired - Fee Related US4578192A (en) 1983-08-11 1984-08-10 Filter cloth for a disk filter

Country Status (4)

Country Link
US (1) US4578192A (de)
EP (1) EP0141082A3 (de)
DE (1) DE3329117A1 (de)
FI (1) FI843164A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991017806A1 (en) * 1990-05-18 1991-11-28 Celleco-Hedemora Ab Filter cloth arrangement in a rotating filter
US20040132373A1 (en) * 2001-02-20 2004-07-08 Mueller Hans Rudolf Filter cloth
US20090020469A1 (en) * 2007-07-19 2009-01-22 Gerald Pitre Horizontal ore filter with replaceable filter elements
US20100282659A1 (en) * 2007-09-26 2010-11-11 Gaudfrin Disc filtration device
US20160263497A1 (en) * 2015-03-11 2016-09-15 GL&V Luxembourg S.à.r.l. Disc filter and a method of constructing a disc filter sector
US11000791B2 (en) * 2019-03-06 2021-05-11 Veolia Water Solutions & Technologies Support Rotary disc filter having backwash guides

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1240385A (en) * 1914-05-09 1917-09-18 Ernest J Sweetland Filter.
US1878384A (en) * 1929-04-18 1932-09-20 Hoover Co Suction cleaner
US1894884A (en) * 1930-05-07 1933-01-17 Warren E Page Vacuum cleaner bag attachment
US2338549A (en) * 1941-08-01 1944-01-04 Us Rubber Co Filter bag
FR1059010A (fr) * 1951-04-05 1954-03-22 Tecalemit Filtres à fluides
GB844440A (en) * 1958-04-29 1960-08-10 Cuno Eng Corp An improved fluid filter and method of making same
US3165473A (en) * 1960-10-24 1965-01-12 Pall Corp Corrugated filter unit
US3807146A (en) * 1967-02-21 1974-04-30 H Witkowski Mold for making a filter
US4111815A (en) * 1976-03-26 1978-09-05 Process Scientific Innovations Limited Filter elements for gas or liquid and methods of making such elements

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB764500A (en) * 1953-07-16 1956-12-28 Peterson Filters & Eng Coutinuous filter and method of operation thereof
DE1930046A1 (de) * 1969-06-13 1971-02-11 Ardie Werk Gmbh Verfahren und Vorrichtung zum Schalten von mehrstufigen Zahnradwechselgetrieben
DE2144806A1 (de) * 1971-09-08 1973-03-15 Joseph Dipl Ing Brokhage Filterscheibe
US4362622A (en) * 1981-03-30 1982-12-07 Ingersoll-Rand Company Filter

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1240385A (en) * 1914-05-09 1917-09-18 Ernest J Sweetland Filter.
US1878384A (en) * 1929-04-18 1932-09-20 Hoover Co Suction cleaner
US1894884A (en) * 1930-05-07 1933-01-17 Warren E Page Vacuum cleaner bag attachment
US2338549A (en) * 1941-08-01 1944-01-04 Us Rubber Co Filter bag
FR1059010A (fr) * 1951-04-05 1954-03-22 Tecalemit Filtres à fluides
GB844440A (en) * 1958-04-29 1960-08-10 Cuno Eng Corp An improved fluid filter and method of making same
US3165473A (en) * 1960-10-24 1965-01-12 Pall Corp Corrugated filter unit
US3807146A (en) * 1967-02-21 1974-04-30 H Witkowski Mold for making a filter
US4111815A (en) * 1976-03-26 1978-09-05 Process Scientific Innovations Limited Filter elements for gas or liquid and methods of making such elements

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991017806A1 (en) * 1990-05-18 1991-11-28 Celleco-Hedemora Ab Filter cloth arrangement in a rotating filter
US5304304A (en) * 1990-05-18 1994-04-19 Folke Jakobson Filter cloth arrangement in a rotating filter
US20040132373A1 (en) * 2001-02-20 2004-07-08 Mueller Hans Rudolf Filter cloth
EP1232780B2 (de) † 2001-02-20 2014-10-29 Sefar AG Filtertuch
US20090020469A1 (en) * 2007-07-19 2009-01-22 Gerald Pitre Horizontal ore filter with replaceable filter elements
US8252181B2 (en) * 2007-07-19 2012-08-28 Gerald Pitre Horizontal ore filter with replaceable filter elements
US20100282659A1 (en) * 2007-09-26 2010-11-11 Gaudfrin Disc filtration device
US8628661B2 (en) * 2007-09-26 2014-01-14 Guadfrin Disc filtration device
US20160263497A1 (en) * 2015-03-11 2016-09-15 GL&V Luxembourg S.à.r.l. Disc filter and a method of constructing a disc filter sector
US9669338B2 (en) * 2015-03-11 2017-06-06 GL & V Luxembourg Sàrl Disc filter and a method of constructing a disc filter sector
US11000791B2 (en) * 2019-03-06 2021-05-11 Veolia Water Solutions & Technologies Support Rotary disc filter having backwash guides

Also Published As

Publication number Publication date
EP0141082A3 (de) 1987-08-19
DE3329117A1 (de) 1985-02-28
FI843164A (fi) 1985-02-12
FI843164A0 (fi) 1984-08-10
EP0141082A2 (de) 1985-05-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ZURICHER BEUTELTUCHFABRIK AG 8803 RUSCHLIKON SWITZ

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MULLER, HANS-RUDOLF;REEL/FRAME:004523/0252

Effective date: 19860120

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 19900325